Propeller



Y Sem. 29, 1925.

' 1,555,043 A. WAGNER PROPELLER Filed May 51, 1924 314mm for PatentedSept. 29,' 1925'.

UNITED STATES PATE-N ALFRED WAGNER, F WHITTEMORE, IOWA.

PROPELLER.

Application led- May 31, 1924. Serial No. |717,188.

' fo all '1c/0m z't may concern:

Be it known that I, ALFRED WAGNER, a citizen ot' the United States,residing at W hiitemore, in the county of Kossu-t-h and 'State of Iowa,have invented certain new and useful .Improvements in Propellers, ofwhich the following is a specification. y,

'lhisinvention relates to propeller structures, and it consists in thenovel features hereinafter described and claimed.

A11 object of the invention is to provide in a propeller structure apair of sets of propeller blades, with means for simultaneously rotatingthe sets in opposite direction whereby the blades will cleave the air,in 0,] oposite`A directions, thus preventing side draft and assist inbalancing the aeroplane to which the propeller is attached.

A further object is to provide a propeller ,structure, which Willdevelop maximum power and speed.

' In the accompanying drawine',

F igure l is a side elevation oij the propeller structure, with partsthereof broken away, and parts in section.

l Flgure 2 is a transverse sectional cut on the line 2-2 of 4Figure 1.

The propeller structure comprises a housing 1, having a bearing 2, anda' spider 3, .mounted upon the bearing. The housing 4 is carried by thespider. A shaft 5'is jour# nalled in the bearing 2 and a set ofpropeller blades is mounted at theend of the said shaft 5. A hub 7 isjournalled upon the bearing 2 and a set of propeller blades 8 is mountedupon the hub 7. The air cleaving edgesof the blades 8 are disposed inanop` posite direction from the direction in which -the air cleaving edgesofthe blades 6 are disposed. Bevelled pinions 9`are journalled upon thearms of the spider 3, and mesh at one side with the bevelled gear wheel10, which is mounted upon the shaftl 5. The bevelled gear wheel 11 is nioiitedY upon the hub 7 andmeshes with the pinion 9 at the View,

opposite sides thereof, from the sides at which the said pinions meshwith the gear Wheel 10. In other words, the gear wheels and 1lIarelocated at the opposite sides of the spider 9.4

Therefore, it will be seen that as the shaft 5 rotates, the blade 6 willbe rotated in one direction, and the blades '8 will rotate in anopposite direction. Therefore the said blades cleave the air in oppositedirections. With the arrangement described, maximum power may beVgained, andthe set ofblades in advance will crowd the airback toward theset of blades at the rear, thereby rendering t-he air denser at the rearset of blades and affording better resistance for the blades to Workupon.

Having described the invention, what is vclaimed is:

A propeller structure comprising a housing, a bearing extending throughone side of the housing and provided with a spider located in thehousing, a shaft extending through the housing, the bearing, and thespider, blades'xed to the shaft on one side of the housing and havingtheir cleaving edges disposed in one direction, a4 hub journaled uponthe bearing and extending through the other side of the housing, -a setoi" blades mounted upon the hub on the otherrside of the housing andhaving their cleaving edges disposed in an `opposite direction from thatin which the edges of. the

vrfirst mentioned blades are disposed, beveled gears carried by thespider, a beveled gear meshing with the beveled spider gears androtatable with 'the shaft and a secondbeveled gear meshing with thebeveled spider gear and rotatable with the hub whereby the sets ofblades are rotated in opposite directions upon rotation of the shaft.

In testimony whereofy I aiix my signature.

ALFRED WAGNER.

